Hofmann, Andrea, Michael Erhard, Peter Schmidt, Wolfgang Bessler, Karl-Heinz Wiesmüller, Pia Zinsmeister, Manfred Stangassinger, and Uli Lösch. “[Lipopeptides As Adjuvants for the Immunisation of Laying Hens] [Article in German]”. ALTEX - Alternatives to animal experimentation 13, no. Supp. 1 (January 1, 1996): 26–29. Accessed June 22, 2024. https://www.altex.org/index.php/altex/article/view/2057.